www.eloquentlogic.com
eloquent logic eloquent logic

work2.gif (529 bytes)








Legend

W

= work

F

= force

d

= distance

KE

= kinetic energy

PE

= potential energy

v

= velocity

a

= acceleration

t

= time

P

= power

¥\²v

¥\²v P ³Q©w¸q¬°¨C³æ¦ì®É¶¡ t (¬í)©Ò§@ªº¥\©Î§@¥\®Éªº¤ñ²v¡C
Power = W/t ³æ¦ì¥Ë Watts (W).  1 W = 1 J/s
W = ©Ò§@ªº¥\
t = ®É¶¡

¥\²v¬° P ªº¤ÞÀº / µo°Ê¾÷¦b®É¶¡ t ùةҧ@ªº¥Î¬O W = P t

¡@

¯à¶q³æ¦ì (Energy units)

°£µJ¦Õ¥H¥~¡A¨ä¥¦¦b¯à·½¤u·~±`¥Îªº¯à¶q³æ¦ì¥]¬A¡G
(i) ¤d¥Ë¤p®É(kWh)¡G1 kWh = 3.6 MJ
(ii) §J¥d(therm)¡G1 therm = 110 MJ
(iii) ­^°ê¼ö¶q³æ¦ì(Btu)¡G1 Btu = 1.1 kJ
(iv) ¦Ê¸U¾··Ñ·í¶q(Mtce)¡G1 Mtce = 20 - 30 GJ

¡iµù¡G1 kJ = 1,000J; 1 MJ = 1,000kJ; 1GJ=1,000MJ¡j

Previous Lesson

Mechanical Energy

Power

Next Lesson

 

created by Will Kuo and Stan Watterson
thinkquest participants  team 25844
©1999 Eloquent Logic. All rights reserved.